2022 LEXUS RX450h winter tires

13Pictorial index
Precautions for winter season ..................................................................................... P.286
To prevent freezing (windshield wiper de-icer)
*.................................................P.305
Precautions for car wash ................................................................................................ P.351
Fuel filler door ........................................................................................................ P.209
Refueling method .............................................................................................................P. 209
Fuel type/fuel tank capacity ......................................................................................... P.454
Tires.......................................................................................................................... .. P.374
Tire size/inflation pressure ............................ ................................................... P.374, 458
Winter tires/tire chains .................................................................................................. P.286
Checking/rotation/tire pressure warning system.............................................. P.374
Coping with flat tires........................................................................................................ P .424
Hood ..........................................................................................................................P.363
Opening ........................................................................................................................ ....... P.363
Engine oil ..................................................................................................................... .........P.455
Coping with overheating ............................................................................................... P.446
Warning messages .......................................................................................................... P.420
Headlights/front turn signal lights/front side marker lights ............ P.192, 198
Side turn signal lights ............................................................................................. P.192
Parking lights/daytime running lights................ ...............................................P.198
Fog lights/cornering lights
*...................................................................... P.198, 204
Rear side marker lights .........................................................................................P.198
Stop/tail lights ..........................................................................................................P.198
Back-up lights/rear turn signal lights ............. ......................................... P.192, 198
Shifting the shift lever to R .............................................................................................. P.189
License plate lights .................................................................................................P.198
*:If equipped
Light bulbs of the exterior lights for driving
(Replacing method: P. 392, Watts: P.460)
E
F
G
H
I
J
K
L
M
N
O

2854-6. Driving tips
4
Driving
Control and maintain the vehicle at a
constant speed. Before stopping at a
toll booth or similar, allow plenty of
time to release the accelerator and
gently apply the brakes. A greater
amount of electrical energy can be
regenerated when slowing down.
Use the air conditioning only when
necessary. Doing so can help reduce
excessive gasoline consumption.
In summer: When the ambient tem-
perature is high, use the recirculated
air mode. Doing so will help to reduce
the burden on the air conditioning sys-
tem and reduce fuel consumption as
well.
In winter: Because the gasoline engine
will not automatically cut out until it and
the interior of the vehicle are warm, it
will consume fuel. Also, fuel consump-
tion can be improved by avoiding over-
use of the heater.
Make sure to check the tire inflation
pressure frequently. Improper tire infla-
tion pressure can cause poor fuel
economy.
Also, as snow tires can cause large
amounts of friction, their use on dry
roads can lead to poor fuel economy.
Use tires that are appropriate for the
season. Carrying heavy luggage will lead to
poor fuel economy. Avoid carrying
unnecessary luggage.
Installing a large
roof rack will also cause poor fuel
economy.
Since the gasoline engine starts up and
cuts out automatically when cold,
warming up the engine is unnecessary.
Moreover, frequently driving short dis-
tances will cause the engine to repeat-
edly warm up, which can lead to excess
fuel consumption.
Highway driving
Air conditioning
Checking tire inflation pressure
Luggage
Warming up before driving

2864-6. Driving tips
Use fluids that are appropriate to
the prevailing outside temperatures.
•Engine oil
• Engine/power control unit coolant
•Washer fluid
Have a service technician inspect
the condition of the 12-volt battery.
 Have the vehicle fitted with four
snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires ar e of the specified size
and the same brand, and that chains match
the size of the tires.
Perform the following according to the
driving conditions:
 Do not try to forcibly open a window
or move a wiper that is frozen. Pour
warm water over the frozen area to
melt the ice. Wipe away the water
Winter driving tips
Carry out the necessary prepara-
tions and inspections before driving
the vehicle in winter. Always drive
the vehicle in a manner appropriate
to the prevailing weather condi-
tions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in a loss of
vehicle control and cause death or seri-
ous injury.
●Use tires of the specified size.
●Maintain the recommended level of air
pressure.
●Do not drive in excess of 75 mph (120
km/h), regardless of the type of snow
tires being used.
●Use snow tires on all, not just some
wheels.
■Driving with tire chains
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in the vehicle
being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed
limit specified for the tire chains being
used, or 30 mph (50 km/h), which-
ever is lower.
●Avoid driving on bumpy road surfaces
or over potholes.
●Avoid sudden acceleration, abrupt
steering, sudden braking and shifting
operations that cause sudden engine
braking.
●Slow down sufficiently before entering
a curve to ensure that vehicle control is
maintained.
●Do not use the LTA (Lane Tracing
Assist) system.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow
tires from your Lexus dealer or legitimate
tire retailers.
This is because the removal and attach-
ment of snow tires affects the operation
of the tire pressure warning valves and
transmitters.
Before driving the vehicle

3756-3. Do-it-yourself maintenance
6
Maintenance and care
inspected at your Lexus dealer.
■Maximum load of tire
Check that the maximum load of the
replacement tire is greater than 1/2 of the
Gross Axle Weight Ratings (GAWR) of
either the front axle or the rear axle, which-
ever is greater.
For the GAWR, see the Certification Label.
For the maximum load of the tire, see the
load limit at maximum cold tire inflation
pressure mentioned on the sidewall of the
tire. ( P.463)
■Tire types
●Summer tires
Summer tires are high-speed performance
tires best suited to highway driving under
dry conditions. Since summer tires do not
have the same traction performance as
snow tires, summer tires are inadequate for
driving on snow-covered or icy roads. For
driving on snow-covered roads or icy
roads, the use of snow tires is recom-
mended. When installing snow tires, be
sure to replace all four tires.
●All season tires
All season tires are designed to provide
better traction in snow and to be adequate
for driving in most winter conditions as well
as for use year-round. All season tires,
however, do not have adequate traction
performance compared with snow tires in
heavy or loose snow. Also, all season tires
fall short in accelera tion and handling per-
formance compared with summer tires in
highway driving.
●Snow tires
For driving on snow-covered roads or icy roads, we recommend us
ing snow tires. If
you need snow tires, select tires of the
same size, construction and load capacity
as the originally installed tires. Since your
vehicle has radial tires as original equip-
ment, make sure your snow tires also have
radial construction. Do not install studded
tires without first checking local regula-
tions for possible restrictions. Snow tires
should be installe d on all wheels.
( P.286)
■If the tread on snow tires wears down
below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is
lost.
WARNING
■When inspecting or replacing tires
Observe the following precautions to
prevent accidents.
Failure to do so may cause damage to
parts of the drive train as well as danger-
ous handling characteristics, which may
lead to an accident resulting in death or
serious injury.
●Do not mix tires of different makes,
models or tread patterns.
Also, do not mix tires of remarkably
different treadwear.
●Do not use tire sizes other than those
recommended by Lexus.
●Do not mix differently constructed
tires (radial, bias-belted or bias-ply
tires).
●Do not mix summer, all season and
snow tires.
●Do not use tires that have been used
on another vehicle.
Do not use tires if you do not know
how they were used previously.
●Do not tow if your vehicle has a com-
pact spare tire installed.

513Alphabetical Index
Checking ....................................................... 367
Preparing and checking before winter.........................................................................286
Power easy access system ....................... 140
Power outlets ................................................ 338
Power steering (Elect ric power steering
system).......................................................... 279 Warning light .................................................413
Power switch ...................................................182 Auto power off function .......................... 185
Changing the power switch modes . 185
Power switch (engine switch) If your vehicle has to be stopped in an
emergency ................................................ 402
Power windows Door lock linked window operation..152
Jam protection function............................. 151
Operation......................................................... 151
Window lock switch ..................................153
Pre-Collision System (PCS) Function ............................................................218
PCS OFF switch ........................................ 220
Warning light .................................................416
R
Radar cruise control (dynamic radar cruise control with full-speed range)............. 236
Radiator ........................................................... 368
RCTA Function .......................................................... 259
Warning message.....................................260
RCTA (Rear Cross Traffic Alert) ......... 250
RCTA function ............................................. 260
Rear automatic air conditioning system .......................................................................... 309
Rear Cross Traffic Alert (RCTA) ......... 259
Rear door sunshades ................................. 340
Rear fog lights Switch .............................................................. 204
Rear seats ........................................................ 130 Adjustment....................................................... 131
Folding down the rear seatbacks......... 131 Head restraints..............................................143
Seat heaters ....................................................312
Rear side marker lights Light switch .................................................... 198
Replacing light bulbs................................393
Rear turn signal lights Replacing light bulbs....................393, 397
Turn signal lever ...........................................192
Wattage ......................................................... 460
Rear view mirror Inside rear view mirror ..............................147
Outside rear view mirrors...................... 148
Rear window defogger .............................300
Rear window wiper.....................................208
Refueling Capacity .........................................................454
Fuel types .......................................................454
If the fuel filler do or cannot be opened
......................................................................... 438
Opening the fuel tank cap ................... 209
Regenerative braking ....................................67
Remote Touch .............................................. 292
Replacing Electronic key battery ............................. 386
Fuses................................................................ 388
Light bulbs ..................................................... 392
Tires .................................................................. 424
Resetting the message indicating mainte- nance is required ...................................... 356
Rev indicator .................................................... 85
Rev peak............................................................. 85
Road Sign Assist .............. ............................ 234
RSA (Road Sign Assist) ............................ 234
S
Seat belt reminder light.....................413, 414
Seat belts............................................................ 26 Automatic Locking Retractor................. 28
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt..........................................................................353
Emergency Locking Retractor .............. 28